#include<stdio.h>
int main() 
{
    double a, b, res;
    char op;
    scanf("%lf%c%lf",&a,&op,&b);
    switch(op) 
	{
        case '+': res = a + b; break;
        case '-': res = a - b; break;
        case '*': res = a * b; break;
        case '/': res = a / b;break;
    }
    printf("%.f", res);
    return 0;
}
